London

Land in Hounslow

Figures for the Hounslow council area (56 km²) from the open data behind our tools: registered land by size, planning constraints, farmland quality, the electricity network, brownfield sites, and land that may not be registered at all.

1,387

registered land outlines of an acre or more, 101 of them 20 acres or more.

Search them in the site finder →

172

brownfield register sites, 64 hectares in all, with room for at least 10,344 homes by the council's estimate.

See them on the map →

162

plots that may not be registered with HM Land Registry, on our sister site.

Unregistered land in Hounslow →

22

outlines that pass the site finder’s solar farm starting filters: 20 acres or more, near a substation, outside the main constraints and the best farmland.

Show them →

Housing and the local plan

In the government’s Housing Delivery Test 2025, Hounslow built 76% of the homes it needed over three years: 20% buffer.

The council delivered under 85% of the homes it needed, so it must add a 20% buffer to its five-year housing land supply and publish an action plan.

Its adopted local plan is the Hounslow Local Plan 2015-2030, adopted September 2015 (11 years ago; plans are meant to be reviewed at least every five years).

A new plan, the Hounslow Local Plan 2020-2041, is at final consultation (Regulation 19).

From MHCLG’s Housing Delivery Test and the Planning Data platform’s local plan records, which some councils haven’t kept up to date. Whether the tilted balance applies to a scheme also depends on the council’s five-year land supply and the site itself: get planning advice.

Planning constraints

Of the 1,387 outlines of an acre or more, 249 (18%) are mostly in Green Belt. 215 (16%) are partly in flood zone 3, the highest risk.

From the government’s Planning Data platform. Check any site with Planning check.

Farmland quality

100% of the graded farmland outlines of an acre or more are grade 1 or 2, the best and most versatile land.

  • Grade 160
  • Non-agricultural228
  • Urban1,099

Natural England’s provisional grades at the centre of each outline. A broad-scale map, so a field survey is needed for any one site.

Electricity network

603 outlines of an acre or more are within 1 km of a primary or grid substation. The network operator publishes spare demand capacity at 8 substations here, about 98 MW in all.

The best 2 km square for a data centre scores 76 out of 100, and 3 squares score 70 or more. Data centre site search →

Nearby council areas

Counts are of HM Land Registry INSPIRE title outlines (one title can have several outlines, and an outline isn’t always one field), counted under the council HM Land Registry files them with. Substations are from OpenStreetMap. None of this says whether land is for sale or could get planning permission. Sources: HM Land Registry; MHCLG Planning Data; Provisional Agricultural Land Classification © Natural England, Open Government Licence; the councils’ brownfield land registers; network operator open data; © OpenStreetMap contributors.